IECEx Certificateof Conformity
INTERNATIONAL ELECTROTECHNICAL COMMISSION
IEC Certification System for Explosive Atmospheres
for rules and details of the IECEx Scheme visit www.iecex.com

Certificate No.:

IECEx DEK 24.0012

Page 1 of 3

Status:Current

Issue No: 0

Date of Issue:

2024-06-26

Applicant:

RIKEN KEIKI Co., Ltd.
2-7-6, Azusawa,
Itabashi-ku,
Tokyo, 174-8744
Japan

Equipment:

Portable Gas Detector model RX-8500, RX-8600 and RX-8700

Optional accessory:
Type of Protection:

Ex iMarking:Ex ia IIC T4...T3 Ga

Approved for issue on behalf of the IECExCertification Body:

R. Schuller

Position:

Certification Manager

Signature:(for printed version)Date:(for printed version)

2024-06-26

1. This certificate and schedule may only be reproduced in full.
2. This certificate is not transferable and remains the property of the issuing body.
3. The Status and authenticity of this certificate may be verified by visiting www.iecex.com or use of this QR Code.

Certificate issued by:
DEKRA Certification B.V.
Meander 1051
6825 MJ Arnhem
Netherlands

Certificate history:

IECEx Certificateof Conformity
Certificate No.:

IECEx DEK 24.0012

Page 2 of 3

Date of issue:

2024-06-26

Issue No: 0

Manufacturer:

RIKEN KEIKI Co., Ltd.
2-7-6, Azusawa,
Itabashi-ku,
Tokyo, 174-8744
Japan

Manufacturinglocations:

RIKEN KEIKI Co., Ltd.
2-3, Minamisakae-cho,
Kasukabe-shi,
Saitama, 344-0057,
Japan

RIKEN KEIKI NARA MFG. Co., Ltd.
49‐1, Abe, Sakurai‐shi,Nara, 633‐0054,
Japan

This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with theIEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed andfound to comply with the IECEx Quality system requirements.This certificate is granted subject to the conditions as set out in IECEx SchemeRules, IECEx 02 and Operational Documents as amended
STANDARDS :The equipment and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was foundto comply with the following standards
IEC 60079-0:2017
Edition:7.0

Explosive atmospheres - Part 0: Equipment - General requirements

IEC 60079-11:2011
Edition:6.0

Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"This Certificate does not indicate compliance with safety and performance requirements
other than those expressly included in the Standards listed above.
TEST & ASSESSMENT REPORTS:
A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in:
Test Report:
NL/DEK/ExTR24.0015/00
Quality Assessment Reports:
NL/DEK/QAR23.0010/01

NL/DEK/QAR23.0011/00

IECEx Certificate
of Conformity
Certificate No.:

IECEx DEK 24.0012

Page 3 of 3

Date of issue:

2024-06-26

Issue No: 0

EQUIPMENT:Equipment and systems covered by this Certificate are as follows:
The Portable Gas Detector Model RX-8500, RX-8600 and RX-8700 are gas monitors designed to provide continuous monitoring of exposure
to combustible gas, oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2) and hydrogen sulfide (H2S) in hazardous areas. The airsuction is automatically made using an internal micro pump. All the models are the same in construction except that there are differences insensors and Model RX-8700 has one more pump for air suction.
Model RX-8500, RX-8600 or RX-8700 is combined with Battery Unit Model BUD-8000 or Model BUL-8000. Model BUD-8000 includes primary
batteries and Model BUL-8000 includes secondary Li-ion battery. Replacement or charging of Battery Unit can be performed by end-users
and is only allowed in non-hazardous areas.
For the temperature class, T4 is applied when combined with Model BUL-8000 or with Model BUD-8000 including batteries of LR6T(JE),Toshiba. T3 is applied when combined with Model BUD-8000 including batteries of MN1500, Duracell.
Ambient temperature range -20 °C to +50 °C
Ambient temperature range during charge 0 °C to +40 °C
Additional information
The performance of the Portable Gas Detector Model RX-8500, RX-8600 or RX-8700, as a safety device, is not covered by this certificate.
Electrical data
Supply: Battery Unit Model BUD-8000 with three series connected primary batteries, or Rechargeable Battery Unit Model BUL-8000.
Non-replaceable primary battery for backup.
Refer to manufacturer's instructions for the permitted battery types.
SPECIFIC CONDITIONS OF USE: NO